/Engine/Source/Runtime/CoreUObject/Public/UObject/UObjectGlobals.h
Delegate for catching when UClasses/UStructs/UEnums would be available via FindObject<>(), but before their CDOs would be constructed.
typedef TMulticastDelegate_OneParam< void, [FName](API\Runtime\Core\UObject\FName) > FCompiledInUObjectsRegisteredDelegate